Double hung window



May 12, 1959 J. B. DAVIS 2,886,148

7 DOUBLE HUNG WINDOW 7 Filed Oct. 24, 1955 2 Sheets-Sheet 1 1/ John B.Davis INVENTOR ATTORNEY y 19.59 L J. B. DAVIS 7 2,886,148

I DOUBLE HUNG WINDOW Filed Oct. 24, 1955 2 Sheets-Sheet 2 1 I19 9 10 L MI M 3 1/0. u I

I "A m! John B. Dav/5 may l INVENTOR.

A TTORNET Ibis invention relates to metal window and ash frames and ithas particular reference to improvements in a double hung, verticallysliding sash windows.

The principal object of the invention is to provide a window in whichthe contour design of the extruded elements making up the window andsash frames is especially created to accommodate double and tripleweather seals at vulnerable points, such as at the sill, meeting rail,

inuntins and header, thus to positively insure against infiltration ofmoisture and file dust particles. Also, the

arrangement is such that the elements of the upper and lower'sash framesare easily assembled and when assembled, the sash frames are as easilymounted in the window frame with all parts coordinating to provide awindow adequately sealed against driving rain and :blowing dus't storms.

A particular object of the invention is to provide a lower sash railincorporating achannel and a depending skirt or flange, both carryingpile Weatherstripping, the weather-stripping in the channel being ofsubstantially U-shape in transverse section and receiving alongitudinally coextensive rib formed on the stool while theWeatherstripping of the depending flange engages the rear face of thestool in closed position of the lower sash,

the arrangement providing triple sealing against water and dust whichwould otherwise enter below this sash. a

United States Patent i Still another object ofthe invention is toimprove the meeting rails of thesash frames through the provisiloniof ahorizontal upper flange integral with the :ineeting rail of the lowersash frame which overlies the confwuting edge of the meeting rail of theupper sash frame in closed position of the sashes and a :pairofhorizomal interlocking lower flanges longitudinallycoextensive withthe lower edges of the meeting rails, there being provided between theupper horizontal flange and the lower interlocking flangeslongitudinally parallel grooves, one in each meeting rail and verticallyoffset to provide double weathersealing between the meeting rails.

Other objects will appear as the description procefids when consideredwith the annexed drawings, whe ein:

fully assembled window, composed of a sill 11; parallel jambs 12 and aheader 13. The jambs 12 and header13 are identical in transversesection, each being extruded. Each jamb 12 is formed with longitudinallyparallel and spaced apart exteriorflanges, 14. and 15.whicl 1engage the,

stiles and trim (not shown) of a window opening, or in 2,886,148Patented May12', 1959 2 the ease of double or multiple windows theseflanges 14 and 15 interlock with inner and outer facings 16 and 17,respectively, of a mullion 18, as shown in Figure 3.

Each jamb 12 and 13 has a longitudinally coextensive and perpendicularinterior flange 19. These flanges 19 form continuations of a like flange20 (Figure 1) formed on the header 13, producing an outer stop for theupper sash frames, generally indicated by reference character A.Opposite end outer stop orflange 19 is an inner stop or flange 21 whichis formed by one flange of an angle member 22, secured to the jamb byvertically spaced screws 23. These angle members 22 are identical toangle member 24 (Figure 2) secured to the lintel 13 by horizontallyspaced screws 25. The stop or flange 26 of the angle member 24constitutes a continuation of the stops 21 of the jambs 12 Formedintegrally on each jamb 12 midway between the outer stop 19- and innerstop 21 is a vertical parting strip 27, separating the upper sash frameA from the lower sash frame, broadly designated by reference characterB. In like manner, a horizontal parting strip 28 (Figure 2) ismadeintegral with the lintel 13 and constitutes a continuation of theparting strips 27 of the jambs 12.

A glass pane 29 for the upper sash frame A is held in place'by a glazingstrip 30, secured to opposing faces of the jambs 12 by screws 31, Theseglazing strips are identical and in each, thewall 32 thereof nextadjacent the glass pane 29 is thicker than the companion wall to providesufficient stock for a groove 33, in which is pressed a plastic glazingtube 34. A glazing strip 35 is interposed between the outer surface ofthe pane 29 and a glazing flange 36 formed on the stiles of the uppersash frame A and generally designated by reference numeral 37. Thestiles 37 of the upper sash frame A are identical to each other and tothe stiles 38 of the lower sash frame B. Each stile .is substantiallyU-shape in transverse section and each confronts a jamb 12, thus providea vertica'l chamber 39 in which is longitudinally disposed a fie):- ibletubular housing 40 containing a spiral balance spring 41. These spiralbalances are of conventional manufac- The upper end of the spiralbalance spring 41 which balances the upper sash frame A is fastened inthe tubular housing 40 and the latter is secured atits upper end to thetop of a jarnb. 12 by a screw 42 (Figure 2). The lower end of the spiraltape 41 which extends out of the bottom of the tubular housing 40 isanchored to a bracket 43 (FigureZ), one of'which is secured by screws 44tothe underside of the bottom rail 45 of the upper sash A adjacent eachside thereof and which protrudes intO, thesash channel defined by thestops 19 and parting strip 27.

The lower sash frame B is balanced in like manner. The stiles 3$ of thesash frame B are also substantially ll-shaped and each confronts a jamb-12and are retained for sliding movement by thestop 21 and parting strip27. In the compartment 46 defined by the stiles 38 and jambs 12 ismounted a flexible plastic tube 47, secured to a 12 at its upper end bya screw 48 (Figure 2). A balancing tape 49 is secured at its upper endin the housing 47 and extends from the lower end thereof where itanchored to the bottom of the lower sash frame B by means ofa bracket 50(Figure 2), one ofwhich is secured by screws 51 to the underside of thebottom rail I engage the inner surface of the glass. This'tube is acontinuation of the glazing tube 33, previously described.

A flat glazing strip 57 opposes the glazing tube 56'on 'the outersurface of the glass 55 and is held in place by the depending glazingflange 58 integral withthe meeting 11 rail 52.

The meeting rail 52 has a longitudinally coextensive 'rib 58 (Figure 2),provided with an undercut lip 59 which engages an upturned lip 60 formedon a horizontal depending leg 61 of the meeting rail 45 of the uppersash 11 frame A. Formed in the side of the meeting rail 5.2 whichconfronts the meeting rail45 is an elongate, horizontal groove 62 whichcontains the pile Weatherstrip 63,

bearing against the inner face of the meetingrail 45 of the upper sashframe A in closed position of the two sashes. Immediately below theWeatherstrip 63, the meeting rail 45 is grooved longitudinally toreceive pile Weatherstrip 64. These weatherstn'ps are brought intocontiguity when the two sashes are closed so that moisture, in order toenter between the two sashes, would be required to travel a circuitouscourse. To further preclude any such likelihood, the meeting rail 52 isformed with a horizontal, outwardly projecting flange 65 whose outeredge overlies the space between the two meeting rails and rests on theinner edge of the meeting rail 45 in closed position of the sashes.

A locking lever 66 is pivotally mounted on the meeting rail 45 adjacenteach end thereof by means of a stud 67 and is rotatable in a directionaway from the jambs 12 to overlie the meeting rail 52 of the bottom sashB to secure the same against upward displacement. The bottom rail 68(Figure 2) of the lower sash frame B is triple sealed against moistureand dust infiltration.

A horizontal channel 69 is formed in the underside of sides of the rib71, a double seal at this point obtains;

A third seal is provided by virtue of the engagement of a pileWeatherstrip 73 with the vertical outer surface 74 of the stool 72; theWeatherstrip 73 being retained in a.

groove 75 extending longitudinally in a horizontal flange 76 integralwith and depending from the bottom rail 68 of the lower sash B.

Driving rain or blowing dust impinging the sill 11 are first resisted bythe horizontal Weatherstrip 73 but if any such moisture, dust or coldair should rise above the Weatherstrip 73, it would not be possible forthem to penetrate beyond the double seat created between theWeatherstrip 70 and the rib 71.

The top rail 77 of the upper sash frame A (Figure 2) is identical intransverse section to the stiles 38 and 39 of both frames A and B. Theinner side 78 of the top rail 77 is longitudinally grooved to receivethe pile Weatherstrip 79 which bears against the parting strip 26 on thelintel 13. The opposing side '80 of the rail 77 is similarly grooved toreceive the pile Weatherstrip 81 which bears against the outer stop 20of the upper sash frame. This identical sealing arrangement iscontinuous throughout the entire perimeter of both the upper and lowersashes, hence a double seal exists except at the point where the lowersash engages the sill 11 and at this point a triple seal is provided,'as explained.

A glazing strip 82 is secured by screws 83 (Figure 2) strip 85 isinterposed between the outer surface of the pane 29 and a glazing flange86 integral with and. depending from the top sash rail 78. An identicalglazing strip 87 is affixed to the meeting rail 45 and is identical tothe upper glazing strip 82, thesame having a glazing tube 88 bearingagainst the pane 29 while a fiat glazing strip 89 is interposed betweenthe outer surface of the glass 29 and a glazing flange 90, formed on theouter edge of the meeting rail 45.

Both sash frames A and B are shown as being provided with muntins,generally identified in both cases by reference numeral 100. For thesake of clarity, reference numerals identifying parts of the muntinswill be applied to the enlarged view in Figure 4.

The muntin is comprised of a horizontal, substantially T-shaped rail 101which lies between the upper and lower sections of the glass panes 29and 55. To illustrate the muntin in Figure 4, an enlarged view is takenof the muntin shown in the upper sash frame A in which the pane isindicated by reference numeral 29. The same references will be used toidentify like parts in the muntin of the lower sash frame B. Thetransverse flange 102 bears against the confronting edges of thesections of the glass pane 29 while glazing tubes 103,

- embedded in grooves in glazing strips 104, bear against the oppositesides of the glass sections. The glazing strips 104 are not unlike theglazing strips about the perimeter of the sashes but are held by screws105 threaded into a longitudinally coextensive enlarged portion 106extending between the flange .102 and a similar but narrower flange i107 on the edge of the rail 10-1 opposite the flange 102.

In order to limit lateral displacement of the two sash frames A and B,the stiles of each frame are provided adjacent their upper and lowerends with recesses in which are mounted studs 112 of nylon. These studsare interposed between the sash frames and the sash channels andfunction as guides to insure positive rectilineal travel of the sashframes in their respective channels.

A screen frame 108 is adapted to be seated in a recess provided thereforbetween the sill 11, jambs 12 and lintel 13. The screen 109 is stretchedin the frame by means of the appended claims is also considered to bewithin the spirit and intent of the invention.

What is claimed is:

1. In a window structure having a frame comprising a header, sill andjambs of extruded metal, the header and jambs being of identical profilein transverse section and each having longitudinally coextensive stopsand a parting strip defining parallel sash channels, and upper and lowerglazed sash frames each having a top rail and stiles of identicalprofile in transverse section, a meeting rail on the bottom of the uppersash frame having a longitudinally coextensive upturned lip on its loweredge, a longitudinally coextensive lip on the top rail of the lower sashframe, said top rail being a meeting rail, adapted to inter-engage thelip of the upper sash frame meeting rail in closed positions of the sashframes, weather strips retained in longitudinally coextensive grooves ineach side of the top rail of the upper glazed sash and stiles of each ofthe sash frames in slidable engagement with the stops and parting rail,weather strips disposed in vertically offset, longitudinally coextensivegrooves in the confronting faces of the meeting rails, a bottom rail onthe lower sash frame having a longitudinally coextensive channel and agrooved, depending flange, a stool integral with the sill, alongitudinally coextensive rib on the stool adapted to be received inthe -channel, a Weatherstrip in the channel of inverted YU shape intransverse section adapted to embrace the rib, and a weather strip inthe groove of the depending flange adapted to engage a vertical portionof the stool below the plane of the rib.

and jarnbs each having longitudinally coextensive stops and a partingstrip defining parallel sash channels, and upper and lower glazed sashframes each having a top rail and stiles, a meeting rail on the bottomof the upper sash frame having an upturned lip on its lower edge, a lipon the top rail of the lower sash frame, said top rail being a meetingrail, adapted to inter-engage the lip of the upper sash frame meetingrail in closed positions of the sash frames, weather strips retained ingrooves in each side of the top rail of the upper glazed sash and stilesof each of the sash frames in slidable engagement with the stops andparting rail, weather strips disposed in grooves in the confrontingfaces of the meeting rails, a bottom rail on the lower sash frame havinga channel and a grooved, depending flange, a stool integral with thesill, a rib on the stool adapted to be received in the channel, aweather strip in the channel adapted to embrace the rib, and a weatherstrip in the groove of the depending flange adapted to engage a verticalportion of the stool below the plane of the rib.

3. In a window structure having a frame comprising a header, jambs and asill having a stool, and stops carried by the header and jarnbs, andhaving a parting strip intermediate the stops and defining therewithslide channels for an upper and a lower glazed sash frame, a weatherstripping carried by each of the sash frames in frictional engagementwith the stops and parting strips, a meeting rail on the upper sashframe, a meeting rail on the lower sash frame, the meeting rails havingconfronting slots, one above the other, a weather strip in each of theslots, one being in frictional engagement with the contronting face ofeach meeting rail in closed positions of the sash frames, a bottom railon the lower sash frame having a longitudinal channel confronting thestool, a longitudinal depending flange on the bottom rail having alongitudinal groove, a longitudinal rib on a horizontal portion of thestool, a weather strip in the longitudinal channel engageable with thetop and sides of the rib, and a weather strip in the groove of theflange frictionally engageable with a vertical portion of the stool inclosed position of the lower sash frame.

4. The structure of claim 3 wherein the sash frames have stiles eachapertured. adjacent their upper and lower ends in the portions thereofconfronting their respective channels, the apertures retaining selflubricating, replaceable studs adapted to insure rectilinear travel ofthe sash frames in their respective channels while at the same timepermitting free movement of the sash frames relative to the channels,the arrangement being such that the Weather strip in the longitudinalchannel is positively aligned with the top and sides of the rib, ineifective sealing engagement therewith, when the lower sash frame is inits closed position.

References Cited in the file of this patent UNITED STATES PATENTS2,250,723 Peremi et al. July 29, 1941 2,599,183 Kessler June 3, 19522,747,240 Peterson May 29, 1956 FOREIGN PATENTS 481,457 Great BritainMar. 11, 1938 566,038 Great Britain Dec. 11, 1944

